Device for emptying clay-pans.



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DEVICE FUR-EMPYING CLAYPNS.

(Application med .nm 19,`1ao1.`1

(Alia Model.)

UNITED STATES `@PATENT rrrcn.

JOHN P. VYN N, OF BEEOHOREK, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO JAMES BICKFORD ANI) THOMAS M. STEVENSON, OF LOOKI-IAVEN,

PENNSYLVANIA.

DEVICE FOR EMPTYING CLY-PNS.k

SPECIFICATION forming part of Letters Patent No. 694,903, dated March 4, 1902.

Application inea June 19,1901. .serial NQ. 65,153. (No man.)

To @Zi whomy t may concern:

Be it known that I, JOHN P. WYNN, a citizen of the United States, residing at Beechcreek, in the county of Clinton and State of Pennsylvania, have invented certain new'and useful Improvements in Devices for InstantaneouslyEmptying Clay-Pans; and I do declare that the following is a full,-clear, and exact description of the invention, which Will ro enable others skilled in the art to which it appertains to make and use the same;

The object of my invention is to devise means for expeditiously emptying clay-pans.

' This I accomplish by means of a novel plan x5 of shovel pivoted in a novel manner to aporiion of the pan-frame. This shovel may be caused to engage with the mass of clay in the pan, and by the circular motion of the latter the clay Will be forced up theinclined face of 2o the shovel and over the rim of the pan.

The present invention is particularly designed as an improvementupon the device described and illustrated in Letters Patent of the United States No. 425,729, issued April 18, 1890, to Arthur'A. Bennett. In the abovementioned patent a very crude form of moldboard is shown, which will not lift the clay entirely over the edge of the pan, as will myimproved shovel. Furthermore, the actuating 3o mechanism forthe moldboard is inefficient, as

will be described hereinafter.

My invention also has particular reference to the conguration of the shovel itself, by means of which the clay will be quickly and 3 5 readily ejected in the form of a continuous or nearly-continuous ribbon above and clear of the edge of the pan.

My invention also has relation to a novel means for mounting the shovel so that it may 4o be easily engaged With the mass of clay Within the rapidly-revolvin g pan and will automatically remain in position, liftingA the clay from the pan over the edge thereof. This I accomplish by pivoting the shovel at a point in ad- Vance of the engaging edge of the shovel, so

that the clay in contact with said edge Will be forced up the inclined surface of the shovel and Will tend to force it downward and will keep it constantly in engagement with the 5o bottom of the pan.

VWhen it is depressed. Fig. 2 is atop view thereof, and Fig. 3 is a section taken on the lines of Fig. 2 looking in the direction indicated by the arrow and showing the shovel in the depressed position.

In the several views like parts are designated by the same figures of reference.

The pan l, with a rim 2, mounted on a foundation 3, with side standards 4 4', rolls 5 5, and shaft 6, is of any Well-known design and forms in itself no part of the present invention. The shovel 7 is of a peculiar configuration. It has a slightly-concave bottom Bvivith a slightly-concave back 9. The latter is capped by an outturning rolling edge 10. The leading edge 11 is cut at an acute angle with the back 9, as is shown. The shape of the shovel is such that upon its being lowered in a loaded and revolving pan to the position 'shown by broken lines in Fig. 1 the leading edge 11 will engage with themass of clay, which will be forced upthetrough formed by the bottom 8 and back 9 in the form of a continuous ribbon. The rollingedge l0 will turn the outpassing ribbon over clear of the upper edge of the rim 42. l The actuatingmechanism for the shovel is as follows: The shovel is pivoted at 12 to a 85 fixed arm `13 or to any other suitable point.

An'offset 14: on the shovel connects, by means of a link 15, to a horizontal lever 16. The latter is fulcrumed at 17 to an odset or arm 20. A hand-lever 18, pivoted at 22 on a short standard 21, connects, through the agency of a short link 19, to one extremity of the lever' 16. A counterweight 23, sufficiently heavy to keep the parts in the position illustrated by full lines in Figure 1, is attached to the 95 outer extremity of the lever 16. A notch 24, with which the hand-lever engages, prevents any possible accidental displacement of the latter. vTwo or more guides or baffle-plates 25 25, attached in the usual manner to the roo pan-frame, areV provided for directing the clay to a position to be acted upon by the rolls 5 5 or to the periphery of the pan when the shovel is to be brought into use.

The operation of the device is as follows: The pan revolves in the direction of the arroW shown in Fig. 2. The clay having been acted upon by the rolls until it is in the desired consistency and is ready for removal, the guide-plates 25 25 are so arranged as to direct the clay toward the periphery of the pan. The shovel is depressed to the position shown in broken lines in Fig. 1 by rst disengaging the hand-lever 1S from its engagement with the notch 24 and depressing it. This operation through the agency of the link 19, lever 16, and link 15 will lower the shovel. The leading edge 11 will engage with the mass of clay, which Will be forced up the inclined bottom 8 and turned over above and clear of the edge of the pan in the form of a continuous or nearly-continuous ribbon. It will be seen that the leading edge 11 may be easily engaged With the moving mass of clay. Having been lowered, the action of the clay on the shovel will automatically keep it in position.

It will be seen that my device is much more practicable than that illustrated and described in Letters Patent No. 425,729 in that in my device the shape of the shovel is such as to cleanly lift the mass of clay over and clear of the pan edge, while the Inoldboard illustrated in the abovementioned Letters Patent will simply force a shapeless mass of clay upon and againstthe edge of the pan. Furthermore, by pivoting the shovel in advance of its leading edge it may be readily engaged with the clay and will be held in a depressed position by the clay being forced upon it, while in the above-mentioned Letters Patent the Inoldboard inust be bodily forced into the moving mass of clay and must be positively retained in position, the action of emptying in no Way tending to retain the parts in place.

Having now described and ascertained the nature of my said invention', what I claim, and desire to secure by Letters Patent, is-

1. In a device for emptying pans, the combination with the pan of a shovel having a substantially vertical, slightly concave back set at an acute angle to the pan-rim, the shovel being pivoted within the pan in advance of its leading edge, and means for moving the shovel upon its pivot, the parts being so proportioned and arranged that upon the shovel being lowered, its leading edge Will engage with the moving mass of clay, which will be forced up the trough formed by the bottom and back of the shovel in the form of a continuous ribbon clearof the edge of the pan.

2. In a device for emptying pans, the combination with the pan of a shovel having a substantially vertical, slightly concave back set at an acute angle to the pan-rim, an outturning, rolling top edge for the back, the shovel being pivoted within the pan in advance of its leading edge, and means for moving the shovel upon its pivot, the parts being so proportioned and arranged that upon the shovel being lowered, its leading edge will engage with the moving mass of clay, which will be forced up the trough formed by the bottom and back of the shovel in the form of a continuous ribbon clear of the edge ofthe pan.

This specification signed and witnessed this 17th day of June, 1901.

' JOHN I. VYNN.

Vitnesses:

J. A. BICKFORD, J. MILEs Yos'r. 

